fads is a FAst Detector Simulation toolkit.
Installing fads is done like for any other Go based application or
package:
$ go get -u -v go-hep.org/x/hep/fadsAlternatively, adding the ellipsis ... instructs the go get tool
to also compile and install all the applications and packages under
go-hep/fads:
$ go get -u -v go-hep.org/x/hep/fads/...fads is a toolkit; all the code directly under /fads is a Go
package for implementing a fast simulation for HEP.
An example application fads-app is provided: cmd/fads-app/main.go
Installing & compiling this example application can thus be done like so:
$ go get go-hep.org/x/hep/fads/cmd/fads-appThe binary should then be available from the shell prompt:
$ fads-app -help
Usage: fads-app [options] <hepmc-input-file>
ex:
$ fads-app -l=INFO -evtmax=-1 ./testdata/hepmc.data
options:
-cpu-prof=false: enable CPU profiling
-evtmax=-1: number of events to process
-l="INFO": log level (DEBUG|INFO|WARN|ERROR)
-nprocs=0: number of concurrent events to processA test HepMC file is also shipped with the go-hep/fads repository,
under the testdata directory:
$ fads-app $GOPATH/src/go-hep.org/x/hep/fads/testdata/hepmc.data
::: fads-app...
app INFO cpu: 1.948031994s
app INFO mem: alloc: 3189 kB
app INFO mem: tot-alloc: 26807 kB
app INFO mem: n-mallocs: 53300
app INFO mem: n-frees: 52632
app INFO mem: gc-pauses: 51 ms
::: fads-app... [done] (time=1.9540843s)Running with all the available processors (2 on this test machine), on 5 events:
$ fads-app -nprocs=-1 -evtmax=5 $GOPATH/src/go-hep.org/x/hep/fads/testdata/hepmc.data
::: fads-app...
app INFO workers done: 1/2
app INFO workers done: 2/2
app INFO cpu: 1.15986402s
app INFO mem: alloc: 4280 kB
app INFO mem: tot-alloc: 26827 kB
app INFO mem: n-mallocs: 53380
app INFO mem: n-frees: 45305
app INFO mem: gc-pauses: 32 ms
::: fads-app... [done] (time=1.165603508s)